But he ll never find a profitable service which rents hash like this. Cause in order to profit, they need to rent you their hash and add some markup. So you pay more to mine coins which are worth less at the moment they are mined. Better go buy coins for this money. Unless, you have other reason why you want to support a specific pool.
Afaik, cloud mining services have their own pools to mine. There are no services such as the one you're talking about exists (at least in what I know). Or maybe you're referring to renting mining rigs? Because renting one will allow you to point the miner to your specified pool at a given period of time.
But I doubt if you'll profit from these. Better to buy and trade rather than renting. But who knows, maybe you'll be lucky in renting a rig and make a good profit.
Not really, there will be an X factor for this which is called as
luck since the predetermined calculator about how many satoshi/ghs/day is only an estimation, he could get lucky if the pool got a few block, or perhaps if he rent in big amount, he could be profitting since the share will be bigger as well
